CN102323338A - Acoustic emission based detection method for damage position of fastener - Google Patents

Acoustic emission based detection method for damage position of fastener Download PDF

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CN102323338A
CN102323338A CN201110238757A CN201110238757A CN102323338A CN 102323338 A CN102323338 A CN 102323338A CN 201110238757 A CN201110238757 A CN 201110238757A CN 201110238757 A CN201110238757 A CN 201110238757A CN 102323338 A CN102323338 A CN 102323338A
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sensors
damage
securing member
acoustic emission
sensor
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CN102323338B (en
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魏鹏
李宁
梅盛开
孙志平
刘奇
李成贵
涂万里
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AVIAT ACADEMY OF PLA
Beihang University
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AVIAT ACADEMY OF PLA
Beihang University
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Abstract

The invention discloses an acoustic emission based detection method for a damage position of a fastener, which can realize damage detection in a damageable region on the fastener. The method comprises the following steps of: 1, mounting an acoustic emission sensor; 2, setting positioning related parameters in acquisition software; 3, calibrating the propagation velocity of an acoustic emission signal on the fastener; 4, making a sensor positioning compensation curve: sending out an acoustic emission source analog signals at equal interval positions, extracting times of the signals received by two sensors at each position, recording time difference, solving the difference value of the time difference and theoretical time difference and drawing the positioning compensation curve; and 5, determining the damage position: determining the position of the damage by using the positioning compensation curve in the step 4 according to the time parameters of damage signals received by the two sensors. The method has the advantages of detecting the damage signal of the fastener and timely discovering structural change of the fastener, and has great significance to the safe operation of equipment.

Description

A kind of detection method of the securing member damage position based on acoustic emission
Technical field
The present invention relates to the detection range of the securing member in the fields such as vehicle, boats and ships, engine, particularly a kind of detection method of the securing member damage position based on acoustic emission.
Background technology
Securing member adopts the high-quality stainless steel material more, adopts the different moulding structure to satisfy with manufacturing process and is connected fastening demand under the different situations.Be mainly used in the fastening and sealing of connection of the interface of various plant equipment such as vehicle, boats and ships, diesel engine, gasoline engine, lathe, fire-fighting, chemical plant.In the equipment work process, the working environment of securing member, magnitude of load all can influence the structural safety situation of securing member, in case structural damage will cause device damage, even security incident take place.Therefore, securing member is carried out the detection of damage signal, find its structural change early, significant to the safe operation of equipment.The ways and means of the securing member damage position not being monitored in real time temporarily at present.
Summary of the invention
The problem that the present invention will solve is: to the ways and means that this part of securing member is not carried out damage check at present, the present invention proposes a kind of scheme, can realize the damage check in the rapid wear zone on the securing member.
The detection method of the present invention proposes a kind of securing member damage position based on acoustic emission, realize through following steps:
Step 1, installation calibrate AE sensor: two identical piezoelectric ceramics calibrate AE sensors of model are installed on the securing member outside surface, write down the coordinate position of two sensors on securing member;
Step 2, the location correlation parameter in the acquisition software is set: will damage half securing member comparatively concentrating and be approximated to the bullion flat board, and with the coordinate position Input Software of two sensors on this strip metal plate;
The velocity of propagation of acoustic emission signal on step 3, the demarcation securing member: send signal with the simulated sound transmiting signal source in known location,, confirm the speed v of sonic transmissions with the line localization method in the time-of-arrival loaction;
Step 4, do sensor location compensated curve: transmit with the simulated sound transmiting signal source in position uniformly-spaced; Extract the time of two received signals of sensor on each position; And writing time is poor, does difference with the theoretical mistiming, draws the location compensated curve;
Step 5, confirm damage position: the time parameter of the damage signal that receives according to two sensors, utilize above-mentioned location compensated curve, confirm the damage position.
The invention has the advantages that and realized securing member is carried out damage check, find its structural change early, significant to the safe operation of equipment.
Description of drawings
Fig. 1 is the process flow diagram of the inventive method;
The arrangement synoptic diagram of Fig. 2 during for practical application of the present invention;
Fig. 3 among the present invention to the approximate construction synoptic diagram of half endless belt of annular fastener;
Fig. 4 is sensor location compensated curve.
Wherein, 1 is the piezoelectric ceramics calibrate AE sensor, comprises No. 1 sensor, No. 2 sensors; 2 is securing member; 3 is fastened object; 4 is prime amplifier; 5 is the acoustic emission detection signal processing system.
Embodiment
Be elaborated below in conjunction with accompanying drawing and specific embodiment method to judgement securing member damage position provided by the invention.
The method of judgement securing member damage position provided by the invention, flow process is as shown in Figure 1, specifically realizes through following steps:
Step 1, calibrate AE sensor is installed: securing member (2) is fastened on fastened object (3) outside surface, two identical piezoelectric ceramics calibrate AE sensors 1 of model are installed on the outside surface of securing member 2, placement location is as shown in Figure 2.And make two piezoelectric ceramics calibrate AE sensors (1) be symmetrically distributed in the outside surface of securing member (2).3 is fastened object.Write down the coordinate position of two sensors on securing member; The initial point of X coordinate axis and axially as shown in Figure 3: wherein; Center with a piezoelectric ceramics calibrate AE sensor is the initial point of X coordinate axis; And the direction of X coordinate axis is chosen to be points to another piezoelectric ceramics calibrate AE sensor, and sensor receives the acoustic emission signal on the securing member, sends acoustic emission detection signal processing system 5 to through prime amplifier 4;
Step 2, the location correlation parameter in the acquisition software is set: will damage half securing member comparatively concentrating and be approximated to the bullion flat board, and set its coordinate axis position such as accompanying drawing 3, with the coordinate position Input Software of two sensors on this strip metal plate; The approximate linear orientation of regarding as when damage position is judged.The X coordinate that is recorded in following two sensors of this coordinate system is respectively x 1, x 2
The velocity of propagation of acoustic emission signal on step 3, the demarcation securing member: use diameter to be x at the X coordinate as the HB lead for retractable pencil of 0.5mm 0The place is disconnected plumbous, and simulated sound transmits.Write down the time t that two sensors receive signal 1, t 2According to the line Positioning Principle, the speed that can obtain sonic transmissions is:
v＝Δl/Δt
What wherein Δ l was two sensors to the distance of acoustic emission source is poor, and Δ t is the mistiming that two sensors receive signal.Δ l=| (x is arranged again 1-x)-(x-x 2) |, Δ t=|t 1-t 2|, can obtain the transmission speed v of acoustic emission signal, and the correlation parameter in the acquisition system is set thus;
Step 4, do sensor location compensated curve: in that uniformly-spaced the position is disconnected plumbous, the time of extracting two received signals of sensor on each position, and writing time is poor, does difference with the theoretical mistiming, draws and locatees compensated curve;
Step 5, confirm damage position: the time parameter of the damage signal that receives according to two sensors, utilize above-mentioned location compensated curve, confirm the damage position.
Embodiment
Orientate example as with the damage that has the crackle securing member under the acid corrosion environment below, the method for judgement securing member damage position provided by the invention is described, concrete steps are following:
Step 1, calibrate AE sensor is installed: two identical piezoelectric ceramics calibrate AE sensors of model are installed on the outside surface of securing member 2, and placement location is shown in accompanying drawing 2.3 is fastened object.Write down the coordinate position of two sensors on securing member.Sensor receives the acoustic emission signal on the securing member, sends acoustic emission detection system 5 to through prime amplifier 4;
Step 2, the location correlation parameter in the acquisition software is set: will damage half securing member comparatively concentrating and be approximated to the bullion flat board, and set its coordinate axis position such as accompanying drawing 3, with the coordinate position Input Software of two sensors on this strip metal plate; The approximate linear orientation of regarding as when damage position is judged.The coordinate that is recorded in following two sensors of this coordinate system is respectively (x 1, y), (x 2, y);
The velocity of propagation of acoustic emission signal on step 3, the demarcation securing member: using diameter is (x as the HB lead for retractable pencil of 0.5mm at coordinate 0, y) locate disconnected lead, simulated sound transmits.Write down the time t that two sensors receive signal 1, t 2According to the line Positioning Principle, the speed that can obtain sonic transmissions is:
v＝Δl/Δt
With Δ l=| (x 1-x)-(x-x 2) |, Δ t=|t 1-t 2| substitution can obtain the transmission speed v of acoustic emission signal, and import in the acoustic emission acquisition software.
Step 4, do sensor location compensated curve: at coordinate is 20,40,60,80, and 100 position is disconnected plumbous, extracts time t1, t2 and the Δ t=(t1-t2) of two the received signals of sensor in above position, with theoretical value Δ t ReasonDo difference, draw the location compensated curve, the time parameter that obtains, mistiming and compensated curve such as table 1 and Fig. 4:
Table 1 location offset data record sheet
Figure BDA0000084529220000041
Then but match is compensated curve equation: Y=-1 * 10 -07X+2 * 10 -05
Step 5, confirm damage position: the time parameter of the damage signal that receives according to two sensors, utilize above-mentioned location compensated curve, confirm the damage position.Crackle on the securing member issues out acoustic emission signal in the acid corrosion condition, receives the time parameter of signal according to two sensors, confirms that damage position is following:
1) according to t1, t2, calculate Δ t, and bring formula x=(l+v * Δ t)/2 into, calculate the position coordinate value x of Primary Location Just
2) with x JustBring in the compensated curve formula that obtains in the step 4, calculate the time difference that compensate;
3) mistiming after will compensating is brought computing formula x=(l+v * Δ t)/2 into, obtains damaging the coordinate figure of position.
t1 t2 t1-t2(Δt) Primary Location The mistiming offset The compensation back mistiming Damage position
19.20639 19.20638 0.00000480 82.1 -0.0000086 -0.00000379 64.92

Claims (2)

1. detection method based on the securing member damage position of acoustic emission is characterized in that: realize through following steps:
Step 1, installation calibrate AE sensor: two identical piezoelectric ceramics calibrate AE sensors of model are installed on the securing member outside surface, write down the coordinate position of two sensors on securing member;
Step 2, the location correlation parameter in the acquisition software is set: will damage half securing member comparatively concentrating and be approximated to the bullion flat board, and with the coordinate position Input Software of two sensors on this strip metal plate;
The velocity of propagation of acoustic emission signal on step 3, the demarcation securing member: send signal with the simulated sound transmiting signal source in known location,, confirm the speed v of sonic transmissions with the line localization method in the time-of-arrival loaction;
Step 4, do sensor location compensated curve: transmit with the simulated sound emissive source in position uniformly-spaced; Extract the time of two received signals of sensor on each position; And writing time is poor, does difference with the theoretical mistiming, draws the location compensated curve;
Step 5, confirm damage position: the time parameter of the damage signal that receives according to two sensors, utilize above-mentioned location compensated curve, confirm the damage position.
2. the detection method of a kind of securing member damage position based on acoustic emission according to claim 1 is characterized in that: specifically realize through following steps:
Step 1, installation calibrate AE sensor: securing member (2) is fastened on fastened object (3) outside surface; Two identical piezoelectric ceramics calibrate AE sensors (1) of model are installed on the outside surface of securing member (2); And make two piezoelectric ceramics calibrate AE sensors (1) be symmetrically distributed in the outside surface of securing member (2); Write down the coordinate position of two sensors on securing member; Wherein, be the initial point of X coordinate axis with the center of a piezoelectric ceramics calibrate AE sensor, and the direction of X coordinate axis is chosen to be and point to another piezoelectric ceramics calibrate AE sensor; Two sensors receive the acoustic emission signal on the securing member, send acoustic emission detection system (5) to through prime amplifier (4);
Step 2, the location correlation parameter in the acquisition software is set: will damage half securing member comparatively concentrating and be approximated to the bullion flat board, with the coordinate position Input Software of two sensors on this strip metal plate; The approximate linear orientation of regarding as when damage position is judged; The X coordinate that is recorded in following two sensors of this coordinate system is respectively x 1, x 2
The velocity of propagation of acoustic emission signal on step 3, the demarcation securing member: use diameter to be x at the X coordinate as the HB lead for retractable pencil of 0.5mm 0The place is disconnected plumbous, and simulated sound transmits; Write down the time t that two sensors receive signal 1, t 2According to the line Positioning Principle, the speed that can obtain sonic transmissions is:
v＝Δl/Δt
What wherein Δ l was two sensors to the distance of acoustic emission source is poor, and Δ t is the mistiming that two sensors receive signal; Δ l=| (x is arranged again 1-x 0)-(x 0-x 2) |, Δ t=|t 1-t 2|, can obtain the transmission speed v of acoustic emission signal, and the correlation parameter in the acquisition system is set thus;
Step 4, do sensor location compensated curve: in that uniformly-spaced the position is disconnected plumbous, the time of extracting two received signals of sensor on each position, and writing time is poor, does difference with the theoretical mistiming, draws and locatees compensated curve;
Step 5, confirm damage position: the time parameter of the damage signal that receives according to two sensors, utilize above-mentioned location compensated curve, confirm the damage position.
CN 201110238757 2011-08-19 2011-08-19 Acoustic emission based detection method for damage position of fastener Expired - Fee Related CN102323338B (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102914763A (en) * 2012-05-09 2013-02-06 河海大学 Method for positioning damage sound emission source of hydraulic concrete
CN103852522A (en) * 2014-03-19 2014-06-11 江苏三川智能科技有限公司 Method for monitoring and early warning safety of scaffold
CN104391047A (en) * 2014-12-16 2015-03-04 北京林业大学 Wood damage monitoring device based on acoustic emission technique
CN104634878A (en) * 2014-12-16 2015-05-20 北京林业大学 Wood damage monitoring method based on acoustic emission technique
CN105136910A (en) * 2015-08-21 2015-12-09 南昌航空大学 Tube plate stereostructure girth joint sound emission detecting and positioning method
CN106404393A (en) * 2016-08-24 2017-02-15 上海泛智能源装备有限公司 Part positioning method and related apparatus
CN106556646A (en) * 2016-11-18 2017-04-05 金陵科技学院 Acoustic emission tomography determines the detecting system at damages of concrete structures position
CN108195940A (en) * 2017-12-28 2018-06-22 中国特种设备检测研究院 A kind of Optical Fibre Acoustic Emission Sensor array apparatus and mechanical crackle evolution monitoring technology
CN108980638A (en) * 2018-07-24 2018-12-11 广州特种承压设备检测研究院 Buried appendix leak point positioning method
CN109085250A (en) * 2018-09-17 2018-12-25 山东建筑大学 A kind of sound emission construction damage positioning method based on barycentric coodinates
CN110907540A (en) * 2019-12-04 2020-03-24 哈尔滨工业大学 Ultrasonic guided wave multi-damage identification method based on Bayesian updating and Gibbs sampling

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CN108132304B (en) * 2017-12-05 2020-07-21 北京机电工程研究所 Method for evaluating connection strength of spacecraft composite fastener

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0835955A (en) * 1994-07-22 1996-02-06 Hitachi Constr Mach Co Ltd Ultrasonic probe
JP2005195495A (en) * 2004-01-08 2005-07-21 Hitachi Ltd Ultrasonic flaw scanning apparatus
JP2006010314A (en) * 2004-06-22 2006-01-12 Hitachi Ltd Ultrasonic flaw detection method
US20070044564A1 (en) * 2005-08-26 2007-03-01 Integrated Curved Linear Ultrasonic Transducer Inspection Apparatus, Systems, And Methods Integrated curved linear ultrasonic transducer inspection apparatus, systems, and methods
CN101042372A (en) * 2007-04-23 2007-09-26 北京航空航天大学 Detection processing system and detection processing method for mobile defect of steel beam structure
US20090095087A1 (en) * 2006-04-05 2009-04-16 Masaki Yamano Ultrasonic probe, ultrasonic flaw detection method, and ultrasonic flaw detection apparatus
CN101435799A (en) * 2008-12-19 2009-05-20 清华大学 Failure diagnosis method and apparatus of hydroturbine based on acoustic emission technology
CN101701937A (en) * 2009-11-09 2010-05-05 哈尔滨工程大学 Ultrasonic nondestructive test method and test device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0835955A (en) * 1994-07-22 1996-02-06 Hitachi Constr Mach Co Ltd Ultrasonic probe
JP2005195495A (en) * 2004-01-08 2005-07-21 Hitachi Ltd Ultrasonic flaw scanning apparatus
JP2006010314A (en) * 2004-06-22 2006-01-12 Hitachi Ltd Ultrasonic flaw detection method
US20070044564A1 (en) * 2005-08-26 2007-03-01 Integrated Curved Linear Ultrasonic Transducer Inspection Apparatus, Systems, And Methods Integrated curved linear ultrasonic transducer inspection apparatus, systems, and methods
US20090095087A1 (en) * 2006-04-05 2009-04-16 Masaki Yamano Ultrasonic probe, ultrasonic flaw detection method, and ultrasonic flaw detection apparatus
CN101042372A (en) * 2007-04-23 2007-09-26 北京航空航天大学 Detection processing system and detection processing method for mobile defect of steel beam structure
CN101435799A (en) * 2008-12-19 2009-05-20 清华大学 Failure diagnosis method and apparatus of hydroturbine based on acoustic emission technology
CN101701937A (en) * 2009-11-09 2010-05-05 哈尔滨工程大学 Ultrasonic nondestructive test method and test device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
赵霞等: "基于声发射技术的损伤诊断Agent研究", 《中国机械工程》 *

Cited By (15)

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CN102914763A (en) * 2012-05-09 2013-02-06 河海大学 Method for positioning damage sound emission source of hydraulic concrete
CN103852522A (en) * 2014-03-19 2014-06-11 江苏三川智能科技有限公司 Method for monitoring and early warning safety of scaffold
CN103852522B (en) * 2014-03-19 2016-02-24 江苏三川智能科技有限公司 The method of framing scaffold safety monitoring and early warning
CN104391047A (en) * 2014-12-16 2015-03-04 北京林业大学 Wood damage monitoring device based on acoustic emission technique
CN104634878A (en) * 2014-12-16 2015-05-20 北京林业大学 Wood damage monitoring method based on acoustic emission technique
CN105136910B (en) * 2015-08-21 2017-12-22 南昌航空大学 A kind of tube sheet stereochemical structure girth joint acoustic emission detection localization method
CN105136910A (en) * 2015-08-21 2015-12-09 南昌航空大学 Tube plate stereostructure girth joint sound emission detecting and positioning method
CN106404393A (en) * 2016-08-24 2017-02-15 上海泛智能源装备有限公司 Part positioning method and related apparatus
CN106404393B (en) * 2016-08-24 2019-07-12 新奥能源动力科技（上海）有限公司 A kind of positioning parts method and relevant apparatus
CN106556646A (en) * 2016-11-18 2017-04-05 金陵科技学院 Acoustic emission tomography determines the detecting system at damages of concrete structures position
CN108195940A (en) * 2017-12-28 2018-06-22 中国特种设备检测研究院 A kind of Optical Fibre Acoustic Emission Sensor array apparatus and mechanical crackle evolution monitoring technology
CN108980638A (en) * 2018-07-24 2018-12-11 广州特种承压设备检测研究院 Buried appendix leak point positioning method
CN109085250A (en) * 2018-09-17 2018-12-25 山东建筑大学 A kind of sound emission construction damage positioning method based on barycentric coodinates
CN110907540A (en) * 2019-12-04 2020-03-24 哈尔滨工业大学 Ultrasonic guided wave multi-damage identification method based on Bayesian updating and Gibbs sampling
CN110907540B (en) * 2019-12-04 2020-09-11 哈尔滨工业大学 Ultrasonic guided wave multi-damage identification method based on Bayesian updating and Gibbs sampling

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